TITLE

Production of nanomaterials by vaporizing ceramic targets irradiated by a moderate-power continuous-wave CO2 laser

AUTHOR(S)
Snytnikov, V.; Snytnikov, Vl.; Dubov, D.; Zaikovskii, V.; Ivanova, A.; Stoyanovskii, V.; Parmon, V.
PUB. DATE
March 2007
SOURCE
Journal of Applied Mechanics & Technical Physics;Mar2007, Vol. 48 Issue 2, p292
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The efficiency of utilization of CO 2 laser energy for vaporization of Al 2 O 3 ceramics is evaluated using a mathematical model for the interaction of laser radiation with materials. It is shown that the calculated efficiency of radiation-energy utilization is not higher than 15% at a radiation power density of 105 W/cm 2 on the target. On the experimental facility designed for the synthesis of nanopowders, a vaporization rate of 1 g/h was achieved for Al 2 O 3, which corresponds to a 3% efficiency of radiation-energy utilization. The dependence of the characteristic particle size of a zirconium oxide nanopowder on helium pressure in the range of 0.01�1.00 atm was studied. Results of experiments on vaporization of multicomponent materials ( LaNiO 3 and the Tsarev meteorite) are given.
ACCESSION #
24157350

 

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